This is a slightly used Surefire HL1-A Helmet Light(tan). It has 3 white LED lights, 2 Blue LED lights, and 1 blinking Infrared IFF beacon. The white LEDs can be set at low, medium, or high. The blinking infrared LED serves to identify friend or foe (IFF). The blue LEDs are good for close work illumination in a low signature night-vision friendly color. There is a lever on the bottom of the mount on this unit that unlocks the light, allowing for quick removal. We have tested the blue, the white, and the infrared & all are working fine.